Southwest Airlines sometimes offers $39 fares, but finding these deals can be tough. These low-cost tickets are usually available for short-distance flights between selected cities, often during special promotions. Travelers have once booked routes like San Diego to Las Vegas, Houston to New Orleans, and Tampa to Atlanta at this price. The best way to get 39 Dollar Southwest Flights is by frequently checking Southwest’s Low Fare Calendar, where these deals appear for limited dates. Since these fares tend to sell out fast, flexibility with travel dates is key.